/usr/lib/python3/dist-packages/ is in python3-dateutil 2.0+dfsg1-1.
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/usr/lib/python3/dist-packages/dateutil/
/usr/lib/python3/dist-packages/dateutil/__init__.py
/usr/lib/python3/dist-packages/dateutil/easter.py
/usr/lib/python3/dist-packages/dateutil/parser.py
/usr/lib/python3/dist-packages/dateutil/relativedelta.py
/usr/lib/python3/dist-packages/dateutil/rrule.py
/usr/lib/python3/dist-packages/dateutil/tz.py
/usr/lib/python3/dist-packages/dateutil/tzwin.py
/usr/lib/python3/dist-packages/dateutil/zoneinfo/
/usr/lib/python3/dist-packages/dateutil/zoneinfo/__init__.py
/usr/lib/python3/dist-packages/python_dateutil-2.0.egg-info/
/usr/lib/python3/dist-packages/python_dateutil-2.0.egg-info/PKG-INFO
/usr/lib/python3/dist-packages/python_dateutil-2.0.egg-info/SOURCES.txt
/usr/lib/python3/dist-packages/python_dateutil-2.0.egg-info/dependency_links.txt
/usr/lib/python3/dist-packages/python_dateutil-2.0.egg-info/not-zip-safe
/usr/lib/python3/dist-packages/python_dateutil-2.0.egg-info/top_level.txt